if WATCHDOG config TEGRA21X_WATCHDOG tristate "Tegra T21x watchdog" help Say Y here to include support for the watchdog timer embedded in NVIDIA Tegra T210 SoCs. To compile this driver as a module, choose M here: the module will be called tegra21x_wdt. config TEGRA18X_WATCHDOG tristate "Tegra T18x watchdog" depends on ARCH_TEGRA_18x_SOC help Say Y here to include support for the watchdog timer embedded in NVIDIA Tegra SoCs. To compile this driver as a module, choose M here: the module will be called tegra18x_wdt. config TEGRA_HV_WATCHDOG tristate "Tegra Hypervisor watchdog" depends on TEGRA_HV_MANAGER help Say Y here to include support for the watchdog timer embedded in NVIDIA Tegra Hypervisor systems. To compile this driver as a module, choose M here: the module will be called tegra_hv_wdt. config SOFT_PLATFORM_WATCHDOG tristate "Software watchdog platform driver" select WATCHDOG_CORE help A software monitoring watchdog platform device driver. This will fail to reboot your system from some situations that the hardware watchdog will recover from. Equally it's a lot cheaper to install. endif